Difelikefalin Impurity 87 CAS CATO-C4X-304187
| CAS No. | CATO-C4X-304187 |
| Molecular Formula | C28H46N6O5 |
| Molecular Weight | 546.70 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
CATO supplies Difelikefalin Impurity 87 (CAS CATO-C4X-304187), a pharmacopoeial impurity reference standard (molecular formula C28H46N6O5, MW 546.70 g/mol) used for the identification and quantification of trace impurities in APIs.
Difelikefalin Impurity 87 (C28H46N6O5) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
Physical & Chemical Properties
| Molecular Formula | C28H46N6O5 |
| Molecular Weight | 546.70 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 6 |
Related Difelikefalin Standards
- Difelikefalin Impurity 102 (CAS CATO-C4X-3041102)
- Difelikefalin Impurity 92 (CAS CATO-C4X-304192)
- Difelikefalin Impurity 65 (CAS 1024829-72-8)
- Difelikefalin Impurity 94 (CAS CATO-C4X-304194)
- Difelikefalin Impurity 52 (CAS 2722628-11-5)
- Difelikefalin Impurity 53 (CAS CATO-C4X-304153)
- Difelikefalin Impurity 69 (CAS CATO-C4X-304169)
- Difelikefalin Impurity 48 (CAS CATO-C4X-304148)
Recommended Standards
- Anamorelin Impurity 13 (CAS CATO-C4X-286913)
- 16,16-Dimethyl-17-((tetrahydro-2H-pyran-2-yl)oxy)-3,6,9,12-tetraoxaheptadecyl 4-methylbenzenesulfonate (CAS 2702938-92-7)
- Anamorelin Impurity 12 (CAS CATO-C4X-286912)
- Dexamethasone Decanoate (CAS CATO-C4X-116571)
- Trazodone Impurity 66 (CAS CATO-C4X-177266)
- Cefuroxime Sodium EP Impurity C (CAS 69822-88-4)
- Oseltamivir Impurity 257 (CAS CATO-C4X-1720257)
- 3-Hydroxy-5-methoxyisonicotinaldehyde (CAS 1289038-89-6)
- Tert-butyl (5-nitropentyl)carbamate (CAS 1445203-66-6)
- 2-(4-Methoxyphenyl)cyclobutan-1-ol (CAS 1315366-93-8)
- N-hydroxy-1-phenylcyclobutane-1-carboximidamide (CAS 1053657-11-6)
- 25-Hydroxyvitamin D3-d3 (CAS 140710-94-7)
- N-(2-(Piperidin-4-yl)ethyl)methanesulfonamide hydrochloride (CAS 70922-37-1)
- Semaglutide impurity 76 (CAS CATO-C4X-222676)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com